Have a picture of your favourite thing as a background. so in places its really hard to read the text
Do this, but resize and when the user tries to move into the browser, move it around their screen. That is always fun.
Try to modify/editing a PHP file without knowlege, that will not only ruin a website but may cause server downtime if you mess the code up.
That's the one I've seen often in the Lawn / Landscape industry. And the site owners don't give a hoot, because they figure if they can see exactly where the inconspicuous doo-dad is, everybody else must see it too.
True, another annoyance is being unable to use your back button because automatic refreshing tags try to keep you on site.
haha...sounds like a blast from 1997 with everyone having shitty .midi files playing on their geocities and angelfire hosted pages.
You can also insert few hundreds (even thousands) of pop ups which leads to streaming of your .avi movies